[PATCH] Fix PR optimization/6086

[Jakub Jelinek]

On Tue, Apr 02, 2002 at 11:50:21PM +0200, Franz Sirl wrote:
> Daniel Jacobowitz changed the testcase into an executable one and I verified 
> that it fails without your patch and passes with your patch on 
> powerpc-linux-gnu.

Thanks.

> #include <stdlib.h>

Replace this line with:
// PR optimization/6086
// { dg-do run }
// { dg-options "-O" }

extern "C" void abort (void);

(not including any headers is IMHO preferable so that it can be debugged
more easily).

Someone with global write priviledges will have to approve it though.
Dunno how it should be called, maybe g++.dg/opt/preinc1.C?

> struct A
> {
>   A (int x, int y);
>   int a, b;
>   int foo () { return a; }
>   int bar () { return b; }
> };
> 
> struct B
> {
>   virtual ~B ();
>   virtual A baz () const;
> };
> 
> struct C
> {
>   A foo () const;
>   B *c;
> };
> 
> A C::foo () const
> {
>   int x, y;
>   x = c->baz ().foo ();
>   y = c->baz ().bar ();
>   return A (x, y);
> }
> 
> A B::baz () const
> {
>   return A (4, 8);
> }
> 
> A::A (int x, int y)
> {
>   a = x;
>   b = y;
> }
> 
> B::~B ()
> {
> }
> 
> int
> main ()
> {
>   C the_c;
>   B the_b;
>   the_c.c = &the_b;
>   if (the_c.foo().a != 4)
>     abort ();
>   return 0;
> }

	Jakub